プラズマ溶射による界面近傍の熱サイクルと組織・残留応力

概要

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The thermal cycle at the interface due to spraying has been investigated through the finite element method and experiments of the thermal cycle. The experiments of spraying Al_2O_3 and 80% Ni-20% Cr powders on steel showed that the thermal cycle in the experiment was not similar to the numerical result. The thermal cycle in the experiment is dependent on the transfer function of the measuring instrument. The results of experiments on microstructure and residual stress at the vicinity of the interface suggest that the thermal cycle in the experiment is the average value of the region which is decided from the mode of the interval time between deposited powders. The experimentally obtained electron diffraction pattern indicates that the thermal cycle at the interface is similar to the thermal cycle obtained by the finite element method.
1994-05-25